JP4167967B2 - Positioning device for a functional device of a printing press - Google Patents

Description

  The present invention relates to a positioning device for a functional device of a printing press as described in a writing section in the premise of claim 1.

From German Patent Application Publication No. 100008215 as Patent Document 1, a printing apparatus for a rotary printing machine is known. The functional device in this document can be moved relative to the side wall of the printing apparatus by a lateral feed base and can be positioned with reference to an apparatus for another printing apparatus. Such a positioning device allows a functional device such as an inking device, a dampening device or a cleaning device to be positionable relative to various cylinders with respect to its vertical position, for example, as well as a supply position (working position). In this way, these cylinders can be brought into contact with each other, or can be separated from these cylinders at a stop position (standby position), and can be completely removed from the range of the printing apparatus cylinder. Moreover, in the printing apparatus, the printing apparatus cylinder can be moved relative to the side wall of the printing apparatus.
German Patent Application Publication No. 10008215

  The subject of this invention is providing the positioning device which can comprise the drive part for such a positioning device compactly.

  This problem is solved according to the invention by the arrangement according to the characterizing part of claim 1.

  Due to the weight compensation in the vertical position adjustment according to the present invention, a small drive motor can be preferably used.

  By using the positioning device constructed according to the present invention, the ink device module or the dampening device module can be preferably accommodated integrally in a unit type, and positioning is performed while being controlled along the position adjustment path of the device. be able to. The module can preferably be moved to the contact position of the inking device, i.e. the operating position (supply position), or the separation position, i.e. the standby position (stop position). Moreover, the inking device or other functional device can preferably be moved to any position to make room for other components to move. For example, in the printing cylinder, a vacant space for an image line forming device, a fixing device, or a cleaning device can be created.

  By using the positioning device according to the present invention, it is possible to suitably move to different inking positions in various plate cylinder diameters.

  With the positioning device according to the invention, the inking device or dampening device can be moved to follow a plate cylinder in different operating states, for example pre-inking (Vorfaerben) or printing.

  Further features and advantages are given from the subclaims associated with the detailed description.

  Hereinafter, a characteristic configuration of the present invention will be described in detail based on a preferred embodiment.

  The printing device of the printing press shown in FIG. 1 corresponds roughly to a printing device as known from the published German patent application DE 100008215, and within that interval as well. At least one plate cylinder and a counter impression cylinder which are movable and positionable with respect to each other are provided. Furthermore, a functional device such as an inking device / dampening device for inking, and preferably for image area formation, plate fixing (Fixieren der Form), image area removal and cleaning. A device is also provided.

  Since these devices are considered to be well-known, they have been omitted for the sake of clarity. Of the printing device shown, only the side wall 1 is shown. A guide portion 2 for guiding the positioning device 7 is provided on the side wall portion. The positioning device 7 described above is provided with the storage plate 3, and the functional device 4 can be stored in the storage plate. This functional device 4 is schematically indicated by a one-dot chain line, and is, for example, an inking device module or a dampening device module. All of these modules can be attached or removed together.

  The guide part 2 can be provided vertically or obliquely and guides the positioning device in a generally vertical direction. At that time, the positioning device receives the weight of the functional device 4.

  Regarding the adjustment movement in the horizontal direction, as can be seen from the positioning device 7 shown below, a guide rail 5 is provided. In the positioning device 7, the accommodation plate 3 that can be fixed to the guide rail 5 is removed. The functional device 4 can be brought into contact with or separated from a printing device cylinder (not shown) by a guide rail 5 in the arrow direction.

  The basic central part of the present invention is to provide a counterweight with respect to the weight of the functional device, thereby having a mass exceeding 500 kg while using a compactly configured drive unit according to the present invention. For example, a relatively heavy functional device such as an inking device can be moved and positioned. With the weight compensation according to the present invention, it is possible to reduce the load on the drive motor for vertical position adjustment, and as a result, the motor can be configured to be considerably small.

  Looking at FIG. 2, the drive member of an exemplary embodiment of the positioning device 7 can be seen.

  For horizontal position adjustment, a first motor 23 is provided. This motor drives the shaft 20 via the belt transmission 22. The shaft 20 extends over the width of the positioning device 7 and drives the pinions 24 on both sides. These pinions 24 cooperate with the guide rails 5 (FIG. 1), respectively. The guide rail is provided so as to have a rack (not shown) with respect to the pinion. The guide rail 5 is preferably guided by a conventional linear introducer fixed to the positioning device 7.

  In order to drive the rack and pinion 24, transmission devices may be provided at both ends of the shaft 20. For this purpose, each end of the shaft 20 is provided with a right-angle gear transmission, preferably a bevel gear transmission 25, which drives a worm 10 that is preferably self-locking. The worm 10 cooperates with the worm wheel 11, and the worm wheel is provided on a common shaft together with the pinion 24. A friction clutch that operates in the event of an overload can be provided at a drive connection portion between the worm wheel 11 and the pinion 24.

  The drive member shown on one end side of the positioning device 7 is also present on the other end side which is covered with the casing and is not visible. This is also true for a vertical drive member which is preferably likewise provided with transmissions on both sides.

  A motor 17 that drives the shaft 16 via a belt transmission unit 18 is provided for the height adjustment drive unit. The shaft 16 extends over the width of the positioning device 7 and drives the pinion 13 on both sides. These pinions 13 cooperate with the rack 6 (FIG. 1) provided on the guide portion 2 (FIG. 1) side.

  In order to drive the pinion 13, transmission devices are provided at both ends of the shaft 16. For this purpose, each end of the shaft 16 is provided with a right-angle gear transmission, preferably a bevel gear transmission 15, which preferably drives a self-locking worm 14. The worm 14 cooperates with the worm wheel 12, and the worm wheel is provided on the common shaft 26 a or the shaft 26 b together with the pinion 13. The pinion 13 protrudes laterally from the casing of the positioning device 7, and the shaft 26 extends from one pinion 13 to the other pinion 13 in the casing. At this time, the shaft 26 is preferably divided into two parts 26 a and 26 b at the part of the holder 21. These divided parts can be twisted relative to one another. On the shaft split portions 26a and 26b, springs 19 (for example, coil springs) are provided, and these springs are respectively hung on the shaft split portions 26a and 26b on one end side of the springs themselves. At the same time, the other end is hung on the holder 21. When the positioning device 7 is lowered, the shaft 26 is rotated, so that the springs 19 are twisted with respect to their restraining portions firmly fixed to the holder 21 side, and as a result, a force is applied. When the positioning device 7 is raised, the spring 19 is loosened, and the energy released at that time is converted into potential energy via the pinion 13 connected to the rack 6 (FIG. 1). The force of the spring reduces the load on the motor 17 when lifting the positioning device 7 with the functional device, and as a result, the motor can be greatly reduced in size. The spring 19 can be provided so that the initial tension is excessive even when the positioning device 7 is at the highest position.

  A friction clutch that operates in the event of an overload can be provided at a drive connection portion between the worm wheel 12 and the pinion 13. The friction clutch is preferably provided on the worm wheel 12 side so that the drive connection to the shaft 26 can be controlled. For this purpose, for example, an electromagnetically operated friction clutch can be used. This embodiment or configuration of the friction clutch can also be provided in the case of horizontal position adjustment of the positioning device 7.

  Due to the configuration of the reduction gears provided on both sides, a relatively small torque is applied to the shafts 16 and 20, so that the shafts 16 and 20 can be formed as small as possible. Joints and / or splines may be provided on the shafts 16 and 20 in order to eliminate the deviation in the front-rear direction and / or the axial deviation.

  After reaching the predetermined position by the self-locking mechanism of the worms 10 and 14, the motors 17 and 23 can be turned off by turning off the switch, so that the motors are in an unloaded state.

  In order to position at an accurate position, each of the guide portions 2 and 5 is provided with an appropriate distance / path measuring device well known to those skilled in the art, and these distance / path measuring devices control the positioning device. Connected to the unit. In addition, force sensors and / or distance sensors can be provided, for example, to capture data regarding distance to other devices or maximum allowable force. If the drive unit is controlled correspondingly, collision or damage can be avoided.

  The position adjustment movement of the positioning device 7 can be electronically synchronized with the linear movement of the printing cylinder relative to the side wall. In addition, a releasable mechanical connection can be provided between the positioning device 7 and the position adjusting device for the printing cylinder, whereby the height position of the functional device is adjusted via the printing cylinder. . At this time, the friction clutch can be controlled and released, so that the shaft 26 is twisted with respect to the worm wheel 12 and weight compensation is further applied by the force of the spring.

  Apart from the above-described embodiment having gears / rack, the positioning movement of the positioning device 7 can also be realized, for example, by a spindle / nut configuration well known to those skilled in the art.

  The weight compensation for the positioning device 7 or the functional device is as follows: a pressing spring, a tension spring or a bending spring in which one side is fixed to the positioning device 7 and the other side is fixed to the printing device side wall (FIG. 1). Can also be configured.

  Further, for example, a counterweight connected to the positioning device 7 via a cable and a guide pulley and moving up and down inside the vacant portion of the printing device side wall 1 (FIG. 1) can be provided.

  Regarding the weight compensation, a pneumatic (atmospheric pressure) cylinder, a hydraulic pressure (hydraulic pressure) cylinder, or a pneumatic spring in which the positioning device 7 is supported by contact with the side wall portion 1 (FIG. 1) is guided to the guide portion 2 ( It may be provided in parallel with FIG.

FIG. 2 is a view showing a part of a printing apparatus having a positioning device according to the present invention. It is a figure which shows one Embodiment of the positioning device by this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Side wall part 2 ... Guide part (guide unit)
3 ... Storage plate 4 ... Functional device (ink device)
5 ... Guide rail 6 ... Rack 7 ... Positioning device 10,14 ... Worm (transmission device component)
11, 12 ... Worm wheel (transmission device component)
13, 24 ... Pinion 15, 25 ... Bevel gear transmission (transmission device component)
16, 20 ... Shaft 17, 23 ... Motor (electric motor)
18, 22 ... Belt transmission part 19 ... Spring (spring-type preload part)
21 ... Holder 26a, 26b ... Pinion shaft

Claims (7)

For functional units of the printing press, a positioning device that moves along at least one guide portion (2), in the plane of the side wall portion of the printing press the function device (1), the mark Surido A first drive source (23) for adjusting a horizontal position direction and a second drive source for adjusting a vertical position direction for moving to a supply position or a stop position and / or for moving and positioning the functional device (17) and a pinion (13) driven by the second drive source (17), and a means for performing weight compensation for vertical position adjustment is provided.
As a result, the load on the second drive source (17) due to the weight of the functional device can be reduced at least partly, and means for performing the weight compensation is provided on the pinion (13). A shaft (26) connected and rotating together with the pinion (13), and a coil spring (19) provided in an extending direction of the shaft (26) at one end of the shaft (26),
One end of the coil spring (19) is fixed to a fixing portion in the positioning device (7), and the other end is attached to the one end of the shaft (26). Positioning device. The positioning device according to claim 1,
Positioning device characterized in that the positioning movement by the drive source (17; 23) is transmitted via a pinion / rack or via a spindle / nut. The positioning device according to claim 1 or 2,
The positioning device (7) itself is provided with two guide portions (2; 5) for both a substantially vertical movement and a substantially horizontal movement, and is common to the drive source (17; 23). Each drive output by the shaft (16; 20) is branched to the transmission device components (15, 14, 12; 25, 10, 11) provided at both ends of the common shaft (16), respectively. Characteristic positioning device. In the positioning device according to any one of claims 1 to 3,
The printing cylinder of the printing press is movable and positionable with respect to the side wall surface, and the positioning device (7) is electronically tuneable to the linear movement of the printing cylinder. Positioning device. In the positioning device according to any one of claims 1 to 4,
A positioning device characterized in that the positioning device (7) itself is provided with a sensor for measuring the force and / or the distance to other devices so that the driving force can be limited within a predetermined range. The positioning device according to claim 2, wherein
In order to limit the driving force, the pinion (13, 24) and / or the spindle / nut unit is provided with a friction clutch. In the positioning device according to any one of claims 1 to 6,
The second drive source (17) is provided for driving, the second drive source drives the first shaft (16) via the belt transmission (18), and the first shaft The driving force is transmitted to the worm (14) and the worm wheel (12) via the bevel gear transmission (15), and at this time, the worm wheel (12) drives the pinion shaft (26), and the pinion shaft Above, the pinion (13) is provided, the pinion cooperates with a rack (6) provided on the side wall (1) of the printing apparatus, and the pinion shaft includes at least one pinion (13). A spring (19) is provided, which can apply a preload when lowered, and the elastic energy due to the load of the spring (19) is changed to potential energy when the positioning device (7) is raised. Positioning device, characterized in that is provided so as to be capable conversion.

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